212012120201220 has 72 divisors (see below), whose sum is σ = 645375881719296. Its totient is φ = 56336789524032.

The previous prime is 212012120201159. The next prime is 212012120201251. The reversal of 212012120201220 is 22102021210212.

It is a happy number.

212012120201220 is a `hidden beast` number, since 2 + 1 + 201 + 21 + 20 + 201 + 220 = 666.

It is a super-2 number, since 2×212012120201220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212012120201193 and 212012120201202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2080947492 + ... + 2081049371.

It is an arithmetic number, because the mean of its divisors is an integer number (8963553912768).

Almost surely, 2^{212012120201220} is an apocalyptic number.

212012120201220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012120201220 is an abundant number, since it is smaller than the sum of its proper divisors (433363761518076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212012120201220 is a wasteful number, since it uses less digits than its factorization.

212012120201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161997161 (or 4161997156 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212012120201220 its reverse (22102021210212), we get a palindrome (234114141411432).

The spelling of 212012120201220 in words is "two hundred twelve trillion, twelve billion, one hundred twenty million, two hundred one thousand, two hundred twenty".